{"id":75,"date":"2012-08-22T19:20:03","date_gmt":"2012-08-22T11:20:03","guid":{"rendered":"http:\/\/www.hzaumycology.com\/chenlianfu_blog\/?p=75"},"modified":"2012-08-22T22:11:50","modified_gmt":"2012-08-22T14:11:50","slug":"ssh%e8%bf%9c%e7%a8%8b%e4%b8%ad%e8%ae%a9%e8%bf%9b%e7%a8%8b%e5%9c%a8%e5%90%8e%e5%8f%b0%e5%8f%af%e9%9d%a0%e8%bf%90%e8%a1%8c%e7%9a%84%e5%a4%9a%e7%a7%8d%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"http:\/\/www.chenlianfu.com\/?p=75","title":{"rendered":"ssh\u8fdc\u7a0b\u4e2d\u8ba9\u8fdb\u7a0b\u5728\u540e\u53f0\u53ef\u9760\u8fd0\u884c\u7684\u591a\u79cd\u65b9\u6cd5"},"content":{"rendered":"

\u7b80\u4ecb\uff1a\u60f3\u8ba9\u8fdb\u7a0b\u5728\u65ad\u5f00\u8fde\u63a5\u540e\u4f9d\u7136\u4fdd\u6301\u8fd0\u884c\uff1f\u5982\u679c\u8be5\u8fdb\u7a0b\u5df2\u7ecf\u5f00\u59cb\u8fd0\u884c\u4e86\u8be5\u5982\u4f55\u8865\u6551\uff1f<\/p>\n

\u5982\u679c\u6709\u5927\u91cf\u8fd9\u7c7b\u9700\u6c42\u5982\u4f55\u7b80\u5316\u64cd\u4f5c\uff1f \u6211\u4eec\u7ecf\u5e38\u4f1a\u78b0\u5230\u8fd9\u6837\u7684\u95ee\u9898\uff0c\u7528 telnet\/ssh \u767b\u5f55\u4e86\u8fdc\u7a0b\u7684 Linux \u670d\u52a1\u5668\uff0c\u8fd0\u884c\u4e86\u4e00\u4e9b\u8017\u65f6\u8f83\u957f\u7684\u4efb\u52a1\uff0c \u7ed3\u679c\u5374\u7531\u4e8e\u7f51\u7edc\u7684\u4e0d\u7a33\u5b9a\u5bfc\u81f4\u4efb\u52a1\u4e2d\u9014\u5931\u8d25\u3002\u5982\u4f55\u8ba9\u547d\u4ee4\u63d0\u4ea4\u540e\u4e0d\u53d7\u672c\u5730\u5173\u95ed\u7ec8\u7aef\u7a97\u53e3\/\u7f51\u7edc\u65ad\u5f00\u8fde\u63a5\u7684\u5e72\u6270\u5462\uff1f\u4e0b\u9762\u4e3e\u4e86\u4e00\u4e9b\u4f8b\u5b50\uff0c \u60a8\u53ef\u4ee5\u9488\u5bf9\u4e0d\u540c\u7684\u573a\u666f\u9009\u62e9\u4e0d\u540c\u7684\u65b9\u5f0f\u6765\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n

1. nohup<\/h1>\n

\u6211\u4eec\u77e5\u9053\uff0c\u5f53\u7528\u6237\u6ce8\u9500\uff08logout\uff09\u6216\u8005\u7f51\u7edc\u65ad\u5f00\u65f6\uff0c\u7ec8\u7aef\u4f1a\u6536\u5230 HUP\uff08hangup\uff09\u4fe1\u53f7\u4ece\u800c\u5173\u95ed\u5176\u6240\u6709\u5b50\u8fdb\u7a0b\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u7684\u89e3\u51b3\u529e\u6cd5\u5c31\u6709\u4e24\u79cd\u9014\u5f84\uff1a\u8981\u4e48\u8ba9\u8fdb\u7a0b\u5ffd\u7565 HUP \u4fe1\u53f7\uff0c\u8981\u4e48\u8ba9\u8fdb\u7a0b\u8fd0\u884c\u5728\u65b0\u7684\u4f1a\u8bdd\u91cc\u4ece\u800c\u6210\u4e3a\u4e0d\u5c5e\u4e8e\u6b64\u7ec8\u7aef\u7684\u5b50\u8fdb\u7a0b\u3002<\/p>\n

nohup \u7684\u4f7f\u7528\u662f\u5341\u5206\u65b9\u4fbf\u7684\uff0c\u53ea\u9700\u5728\u8981\u5904\u7406\u7684\u547d\u4ee4\u524d\u52a0\u4e0a nohup \u5373\u53ef\uff0c\u6807\u51c6\u8f93\u51fa\u548c\u6807\u51c6\u9519\u8bef\u7f3a\u7701\u4f1a\u88ab\u91cd\u5b9a\u5411\u5230 nohup.out \u6587\u4ef6\u4e2d\u3002\u4e00\u822c\u6211\u4eec\u53ef\u5728\u7ed3\u5c3e\u52a0\u4e0a”&”\u6765\u5c06\u547d\u4ee4\u540c\u65f6\u653e\u5165\u540e\u53f0\u8fd0\u884c\uff0c\u4e5f\u53ef\u7528”>filename 2>&1″\u6765\u66f4\u6539\u7f3a\u7701\u7684\u91cd\u5b9a\u5411\u6587\u4ef6\u540d\u3002<\/p>\n

nohup \u793a\u4f8b<\/p>\n

[root@pvcent107 ~]# nohup pingwww.ibm.com &\r\n[1] 3059\r\nnohup: appending output to `nohup.out'\r\n[root@pvcent107 ~]# ps -ef |grep 3059\r\nroot      3059   984  0 21:06 pts\/3    00:00:00 ping www.ibm.com\r\nroot      3067   984  0 21:06 pts\/3    00:00:00 grep 3059\r\n[root@pvcent107 ~]#<\/pre>\n
2. setsid<\/h1>\n
nohup \u65e0\u7591\u80fd\u901a\u8fc7\u5ffd\u7565 HUP \u4fe1\u53f7\u6765\u4f7f\u6211\u4eec\u7684\u8fdb\u7a0b\u907f\u514d\u4e2d\u9014\u88ab\u4e2d\u65ad\uff0c\u4f46\u5982\u679c\u6211\u4eec\u6362\u4e2a\u89d2\u5ea6\u601d\u8003\uff0c\u5982\u679c\u6211\u4eec\u7684\u8fdb\u7a0b\u4e0d\u5c5e\u4e8e\u63a5\u53d7 HUP \u4fe1\u53f7\u7684\u7ec8\u7aef\u7684\u5b50\u8fdb\u7a0b\uff0c\u90a3\u4e48\u81ea\u7136\u4e5f\u5c31\u4e0d\u4f1a\u53d7\u5230 HUP \u4fe1\u53f7\u7684\u5f71\u54cd\u4e86\u3002setsid \u5c31\u80fd\u5e2e\u52a9\u6211\u4eec\u505a\u5230\u8fd9\u4e00\u70b9\u3002<\/p>\n
setsid \u793a\u4f8b<\/p>\n
[root@pvcent107 ~]# setsid ping www.ibm.com\r\n[root@pvcent107 ~]# ps -ef | grep www.ibm.com\r\nroot     31094     1  0 07:28 ?        00:00:00 ping www.ibm.com\r\nroot     31102 29217  0 07:29 pts\/4    00:00:00 grep www.ibm.com\r\n[root@pvcent107 ~]#<\/pre>\n
\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u4e0a\u4f8b\u4e2d\u6211\u4eec\u7684\u8fdb\u7a0b ID(PID)\u4e3a31094\uff0c\u800c\u5b83\u7684\u7236 ID\uff08PPID\uff09\u4e3a1\uff08\u5373\u4e3a init \u8fdb\u7a0b ID\uff09\uff0c\u5e76\u4e0d\u662f\u5f53\u524d\u7ec8\u7aef\u7684\u8fdb\u7a0b ID\u3002<\/p>\n
3. & subshell<\/h1>\n
\u8fd9\u91cc\u8fd8\u6709\u4e00\u4e2a\u5173\u4e8e subshell \u7684\u5c0f\u6280\u5de7\u3002\u6211\u4eec\u77e5\u9053\uff0c\u5c06\u4e00\u4e2a\u6216\u591a\u4e2a\u547d\u540d\u5305\u542b\u5728\u201c()\u201d\u4e2d\u5c31\u80fd\u8ba9\u8fd9\u4e9b\u547d\u4ee4\u5728\u5b50 shell \u4e2d\u8fd0\u884c\u4e2d\uff0c\u4ece\u800c\u6269\u5c55\u51fa\u5f88\u591a\u6709\u8da3\u7684\u529f\u80fd\uff0c\u6211\u4eec\u73b0\u5728\u8981\u8ba8\u8bba\u7684\u5c31\u662f\u5176\u4e2d\u4e4b\u4e00\u3002 \u5f53\u6211\u4eec\u5c06”&”\u4e5f\u653e\u5165\u201c()\u201d\u5185\u4e4b\u540e\uff0c\u6211\u4eec\u5c31\u4f1a\u53d1\u73b0\u6240\u63d0\u4ea4\u7684\u4f5c\u4e1a\u5e76\u4e0d\u5728\u4f5c\u4e1a\u5217\u8868\u4e2d\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u662f\u65e0\u6cd5\u901a\u8fc7jobs\u6765\u67e5\u770b\u7684\u3002\u8ba9\u6211\u4eec\u6765\u770b\u770b\u4e3a\u4ec0\u4e48\u8fd9\u6837\u5c31\u80fd\u8eb2\u8fc7 HUP \u4fe1\u53f7\u7684\u5f71\u54cd\u5427\u3002<\/p>\n
subshell \u793a\u4f8b<\/p>\n
[root@pvcent107 ~]# (ping www.ibm.com &)\r\n[root@pvcent107 ~]# ps -ef | grep www.ibm.com\r\nroot     16270     1  0 14:13 pts\/4    00:00:00 ping www.ibm.com\r\nroot     16278 15362  0 14:13 pts\/4    00:00:00 grep www.ibm.com\r\n[root@pvcent107 ~]#<\/pre>\n
\u4ece\u4e0a\u4f8b\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u65b0\u63d0\u4ea4\u7684\u8fdb\u7a0b\u7684\u7236 ID\uff08PPID\uff09\u4e3a1\uff08init \u8fdb\u7a0b\u7684 PID\uff09\uff0c\u5e76\u4e0d\u662f\u5f53\u524d\u7ec8\u7aef\u7684\u8fdb\u7a0b ID\u3002\u56e0\u6b64\u5e76\u4e0d\u5c5e\u4e8e\u5f53\u524d\u7ec8\u7aef\u7684\u5b50\u8fdb\u7a0b\uff0c\u4ece\u800c\u4e5f\u5c31\u4e0d\u4f1a\u53d7\u5230\u5f53\u524d\u7ec8\u7aef\u7684 HUP \u4fe1\u53f7\u7684\u5f71\u54cd\u4e86\u3002<\/p>\n
4. disown<\/h1>\n
\u8fd9\u65f6\u60f3\u52a0 nohup \u6216\u8005 setsid \u5df2\u7ecf\u4e3a\u65f6\u5df2\u665a\uff0c\u53ea\u80fd\u901a\u8fc7\u4f5c\u4e1a\u8c03\u5ea6\u548c disown \u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u4e86\u3002\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\uff0c\u5982\u679c\u4e8b\u5148\u5728\u547d\u4ee4\u524d\u52a0\u4e0a nohup \u6216\u8005 setsid \u5c31\u53ef\u4ee5\u907f\u514d HUP \u4fe1\u53f7\u7684\u5f71\u54cd\u3002\u4f46\u662f\u5982\u679c\u6211\u4eec\u672a\u52a0\u4efb\u4f55\u5904\u7406\u5c31\u5df2\u7ecf\u63d0\u4ea4\u4e86\u547d\u4ee4\uff0c\u8be5\u5982\u4f55\u8865\u6551\u624d\u80fd\u8ba9\u5b83\u907f\u514d HUP \u4fe1\u53f7\u7684\u5f71\u54cd\u5462\uff1f\u8fd9\u65f6\u60f3\u52a0 nohup \u6216\u8005 setsid \u5df2\u7ecf\u4e3a\u65f6\u5df2\u665a\uff0c\u53ea\u80fd\u901a\u8fc7\u4f5c\u4e1a\u8c03\u5ea6\u548c disown \u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u4e86\u3002<\/p>\n
\u7528disown -h jobspec \u6765\u4f7f\u67d0\u4e2a\u4f5c\u4e1a\u5ffd\u7565HUP\u4fe1\u53f7\u3002\r\n\r\n\u7528disown -ah \u6765\u4f7f\u6240\u6709\u7684\u4f5c\u4e1a\u90fd\u5ffd\u7565HUP\u4fe1\u53f7\u3002\r\n\r\n\u7528disown -rh \u6765\u4f7f\u6b63\u5728\u8fd0\u884c\u7684\u4f5c\u4e1a\u5ffd\u7565HUP\u4fe1\u53f7\u3002<\/pre>\n
\u7075\u6d3b\u8fd0\u7528 CTRL-z<\/p>\n
\u5728\u6211\u4eec\u7684\u65e5\u5e38\u5de5\u4f5c\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u7528 CTRL-z \u6765\u5c06\u5f53\u524d\u8fdb\u7a0b\u6302\u8d77\u5230\u540e\u53f0\u6682\u505c\u8fd0\u884c\uff0c\u6267\u884c\u4e00\u4e9b\u522b\r\n\u7684\u64cd\u4f5c\uff0c\u7136\u540e\u518d\u7528 fg \u6765\u5c06\u6302\u8d77\u7684\u8fdb\u7a0b\u91cd\u65b0\u653e\u56de\u524d\u53f0\uff08\u4e5f\u53ef\u7528 bg \u6765\u5c06\u6302\u8d77\u7684\u8fdb\u7a0b\u653e\u5728\u540e\u53f0\uff09\r\n\u7ee7\u7eed\u8fd0\u884c\u3002\u8fd9\u6837\u6211\u4eec\u5c31\u53ef\u4ee5\u5728\u4e00\u4e2a\u7ec8\u7aef\u5185\u7075\u6d3b\u5207\u6362\u8fd0\u884c\u591a\u4e2a\u4efb\u52a1\uff0c\u8fd9\u4e00\u70b9\u5728\u8c03\u8bd5\u4ee3\u7801\u65f6\u5c24\u4e3a\u6709\r\n\u7528\u3002\u56e0\u4e3a\u5c06\u4ee3\u7801\u7f16\u8f91\u5668\u6302\u8d77\u5230\u540e\u53f0\u518d\u91cd\u65b0\u653e\u56de\u65f6\uff0c\u5149\u6807\u5b9a\u4f4d\u4ecd\u7136\u505c\u7559\u5728\u4e0a\u6b21\u6302\u8d77\u65f6\u7684\u4f4d\u7f6e\uff0c\u907f\r\n\u514d\u4e86\u91cd\u65b0\u5b9a\u4f4d\u7684\u9ebb\u70e6\u3002<\/pre>\n
disown \u793a\u4f8b1\uff08\u5982\u679c\u63d0\u4ea4\u547d\u4ee4\u65f6\u5df2\u7ecf\u7528\u201c&\u201d\u5c06\u547d\u4ee4\u653e\u5165\u540e\u53f0\u8fd0\u884c\uff0c\u5219\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u201cdisown\u201d\uff09<\/p>\n
[root@pvcent107 build]# cp -r testLargeFile largeFile &\r\n[1] 4825\r\n[root@pvcent107 build]# jobs\r\n[1]+  Running                 cp -i -r testLargeFile largeFile &\r\n[root@pvcent107 build]# disown -h %1\r\n[root@pvcent107 build]# ps -ef |grep largeFile\r\nroot      4825   968  1 09:46 pts\/4    00:00:00 cp -i -r testLargeFile largeFile\r\nroot      4853   968  0 09:46 pts\/4    00:00:00 grep largeFile\r\n[root@pvcent107 build]# logout<\/pre>\n
disown \u793a\u4f8b2\uff08\u5982\u679c\u63d0\u4ea4\u547d\u4ee4\u65f6\u672a\u4f7f\u7528\u201c&\u201d\u5c06\u547d\u4ee4\u653e\u5165\u540e\u53f0\u8fd0\u884c\uff0c\u53ef\u4f7f\u7528 CTRL-z \u548c\u201cbg\u201d\u5c06\u5176\u653e\u5165\u540e\u53f0\uff0c\u518d\u4f7f\u7528\u201cdisown\u201d\uff09<\/p>\n
[root@pvcent107 build]# cp -r testLargeFile largeFile2\r\n[1]+  Stopped                 cp -i -r testLargeFile largeFile2\r\n[root@pvcent107 build]# bg %1\r\n[1]+ cp -i -r testLargeFile largeFile2 &\r\n[root@pvcent107 build]# jobs\r\n[1]+  Running                 cp -i -r testLargeFile largeFile2 &\r\n[root@pvcent107 build]# disown -h %1\r\n[root@pvcent107 build]# ps -ef |grep largeFile2\r\nroot      5790  5577  1 10:04 pts\/3    00:00:00 cp -i -r testLargeFile largeFile2\r\nroot      5824  5577  0 10:05 pts\/3    00:00:00 grep largeFile2\r\n[root@pvcent107 build]#<\/pre>\n
5.screen<\/h1>\n
\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\u4e86\u5982\u4f55\u8ba9\u8fdb\u7a0b\u514d\u53d7 HUP \u4fe1\u53f7\u7684\u5f71\u54cd\uff0c\u4f46\u662f\u5982\u679c\u6709\u5927\u91cf\u8fd9\u79cd\u547d\u4ee4\u9700\u8981\u5728\u7a33\u5b9a\u7684\u540e\u53f0\u91cc\u8fd0\u884c\uff0c\u5982\u4f55\u907f\u514d\u5bf9\u6bcf\u6761\u547d\u4ee4\u90fd\u505a\u8fd9\u6837\u7684\u64cd\u4f5c\u5462\uff1f\u6b64\u65f6\u6700\u65b9\u4fbf\u7684\u65b9\u6cd5\u5c31\u662f screen \u4e86\u3002\u7b80\u5355\u7684\u8bf4\uff0cscreen \u63d0\u4f9b\u4e86 ANSI\/VT100 \u7684\u7ec8\u7aef\u6a21\u62df\u5668\uff0c\u4f7f\u5b83\u80fd\u591f\u5728\u4e00\u4e2a\u771f\u5b9e\u7ec8\u7aef\u4e0b\u8fd0\u884c\u591a\u4e2a\u5168\u5c4f\u7684\u4f2a\u7ec8\u7aef\u3002screen \u7684\u53c2\u6570\u5f88\u591a\uff0c\u5177\u6709\u5f88\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u6211\u4eec\u5728\u6b64\u4ec5\u4ecb\u7ecd\u5176\u5e38\u7528\u529f\u80fd\u4ee5\u53ca\u7b80\u8981\u5206\u6790\u4e00\u4e0b\u4e3a\u4ec0\u4e48\u4f7f\u7528 screen \u80fd\u591f\u907f\u514d HUP \u4fe1\u53f7\u7684\u5f71\u54cd\u3002<\/p>\n
\u7528screen -dmS session name \u6765\u5efa\u7acb\u4e00\u4e2a\u5904\u4e8e\u65ad\u5f00\u6a21\u5f0f\u4e0b\u7684\u4f1a\u8bdd\uff08\u5e76\u6307\u5b9a\u5176\u4f1a\u8bdd\u540d\uff09\u3002\r\n\u7528screen -list \u6765\u5217\u51fa\u6240\u6709\u4f1a\u8bdd\u3002\r\n\u7528screen -r session name \u6765\u91cd\u65b0\u8fde\u63a5\u6307\u5b9a\u4f1a\u8bdd\u3002<\/pre>\n
screen \u793a\u4f8b<\/p>\n
[root@pvcent107 ~]# screen -dmS Urumchi\r\n[root@pvcent107 ~]# screen -list\r\nThere is a screen on:\r\n        12842.Urumchi   (Detached)\r\n1 Socket in \/tmp\/screens\/S-root.\r\n[root@pvcent107 ~]# screen -r Urumchi<\/pre>\n
\u603b\u7ed3<\/em><\/strong><\/span>
\n\u73b0\u5728\u51e0\u79cd\u65b9\u6cd5\u5df2\u7ecf\u4ecb\u7ecd\u5b8c\u6bd5\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u573a\u666f\u6765\u9009\u62e9\u4e0d\u540c\u7684\u65b9\u6848\u3002nohup\/setsid \u65e0\u7591\u662f\u4e34\u65f6\u9700\u8981\u65f6\u6700\u65b9\u4fbf\u7684\u65b9\u6cd5\uff0cdisown \u80fd\u5e2e\u52a9\u6211\u4eec\u6765\u4e8b\u540e\u8865\u6551\u5f53\u524d\u5df2\u7ecf\u5728\u8fd0\u884c\u4e86\u7684\u4f5c\u4e1a\uff0c\u800c screen \u5219\u662f\u5728\u5927\u6279\u91cf\u64cd\u4f5c\u65f6\u4e0d\u4e8c\u7684\u9009\u62e9\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u7b80\u4ecb\uff1a\u60f3\u8ba9\u8fdb\u7a0b\u5728\u65ad\u5f00\u8fde\u63a5\u540e\u4f9d\u7136\u4fdd\u6301\u8fd0\u884c\uff1f\u5982\u679c\u8be5\u8fdb\u7a0b\u5df2\u7ecf\u5f00\u59cb\u8fd0\u884c\u4e86\u8be5\u5982\u4f55\u8865\u6551\uff1f \u5982 … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[10],"_links":{"self":[{"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/posts\/75"}],"collection":[{"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=75"}],"version-history":[{"count":2,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/posts\/75\/revisions"}],"predecessor-version":[{"id":143,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/posts\/75\/revisions\/143"}],"wp:attachment":[{"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=75"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=75"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=75"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}